import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class Blowfish implements Cryptable {
    private static final String ALGORITHM = "Blowfish";

    private SecretKey secretKey;

    public Blowfish() throws Exception {
        KeyGenerator keyGen = KeyGenerator.getInstance(ALGORITHM);
        keyGen.init(128); // Blowfish key length is 128 bits
        this.secretKey = keyGen.generateKey();
    }

    @Override
    public String encrypt(String data) throws Exception {
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedData = cipher.doFinal(data.getBytes());
        return Base64.getEncoder().encodeToString(encryptedData);
    }

    @Override
    public String decrypt(String cryptedData) throws Exception {
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        byte[] decryptedData = cipher.doFinal(Base64.getDecoder().decode(cryptedData));
        return new String(decryptedData);
    }
}